Least Common Multiple (LCM) of 127 and 21
The least common multiple (LCM) of 127 and 21 is 2667.
What is the Least Common Multiple (LCM)?
The LCM of two integers is the smallest positive integer that is divisible by both numbers. It is often used to find common denominators and solve problems involving periodic events.
Formula for LCM
The LCM of two numbers can be calculated using their GCD:
LCM(a, b) = |a × b| ÷ GCD(a, b)
How to Calculate the LCM of 127 and 21?
First, calculate the GCD of 127 and 21 using the Euclidean algorithm. Then use the formula above to find the LCM.
Step-by-Step GCD Calculation
| Step | Calculation |
|---|---|
| 1 | 127 ÷ 21 = 6 remainder 1 |
| 2 | 21 ÷ 1 = 21 remainder 0 |
Examples of LCM Calculations
| Numbers | LCM |
|---|---|
| 63 and 146 | 9198 |
| 70 and 95 | 1330 |
| 101 and 67 | 6767 |
| 144 and 157 | 22608 |
| 149 and 20 | 2980 |